Five Things You Need to Know Today: May 17

1. Local officials will put their heads together when HATS meets at 7 p.m. this evening at that The Hanscom Area Town Selectmen, known as HATS, will consider Streamline Air- response to questions, a March noise report, April's project report and the nomination approval process.

2. The Appropriation Committee meets at 7:30 p.m. tonight at and its agenda includes the snow and ice budget, liaison reports and other business.

3. Nonprofit Net hosts is monthly seminar, from 1:30 to 3:30 p.m. today at .

4. The Tourism Committee's Revolutionary Revelry calendar includes a needle arts show at the from 12 to 4 p.m.; a "Celebrating US" Liberty Ride from 5:30 to 8:30 p.m. and Stump Trivia at the from 7 to 9:30 p.m. 

5. 100 percent -- that's the chance of precipitation today, according to the National Weather Service, which is also predicting high of 56. The evening forecast sees the chance of rain drop to 50 percent, while the temperature could remain about 50.